I | Glossary |
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HBFG
Host Behavior Functional Group: The group of functions performed by an ATM- attached host that is participating in the MPOA service.
HDLC
High Level Data Link Control: An
Header
Protocol control information located at the beginning of a protocol data unit.
HEC
Header Error Control: Using the fifth octet in the ATM cell header, ATM equipment may check for an error and corrects the contents of the header. The check character is calculated using a CRC algorithm allowing a single bit error in the header to be corrected or multiple errors to be detected.
Hello Packet
A type of PNNI Routing packet that is exchanged between neighboring logical nodes.
Hierarchically Complete Source Route
A stack of DTLs representing a route across a PNNI routing domain such that a DTL is included for each hierarchical level between and including the current level and the lowest visible level in which the source and destination are reachable.
Hop-by-Hop Route
A route that is created by having each switch along the path use its own routing knowledge to determine the next hop of the route, with the expectation that all switches will choose consistent hops such that the call will reach the desired destination. PNNI does not use
Horizontal Link
A link between two logical nodes that belong to the same peer group.
I
IASG
Internetwork Address
Centillion 1200N ATM Switch User Manual | |
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